US20110196258A1 - Nesting endoscopic ultrasound guided biopsy device - Google Patents
Nesting endoscopic ultrasound guided biopsy device Download PDFInfo
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- US20110196258A1 US20110196258A1 US13/015,794 US201113015794A US2011196258A1 US 20110196258 A1 US20110196258 A1 US 20110196258A1 US 201113015794 A US201113015794 A US 201113015794A US 2011196258 A1 US2011196258 A1 US 2011196258A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
- A61B10/0283—Pointed or sharp biopsy instruments with vacuum aspiration, e.g. caused by retractable plunger or by connected syringe
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/04—Endoscopic instruments
- A61B2010/045—Needles
Definitions
- Needle biopsies are common for the diagnosis and the staging of disease.
- EUS-FNA endoscopic ultrasound-guided fine needle aspiration
- a biopsy needle is imaged under ultrasound so that the physician is able to visualize a position of the needle in relation to target tissue.
- EUS-FNA procedures ensure that the correct tissue is sampled while minimizing risk to the patient.
- EUS-FNA is a highly sensitive and specific procedure, in certain situations it may be difficult to acquire a satisfactory sample. For example, in some situations the needle must be advanced to the target site within the body along a tortuous path (e.g., through a natural body lumen) making it difficult to employ stiffer, large diameter needles.
- such larger gauge needles may collect tissue samples including a large amount of blood or other fluids which may interfere with analysis of the sampled tissue.
- the present invention is directed to a biopsy device for insertion to a target site within a living body, comprising a first longitudinal element including a first longitudinal element extending from a first element proximal end to a tissue piercing first element distal end and, the first longitudinal element defining a first lumen extending therethrough from a proximal opening at the first element proximal end to a distal opening at the first element distal end, the first longitudinal element being sufficiently flexible to be inserted to a target site along a tortuous path within a natural body lumen and a second longitudinal element extending from a proximal end to a tissue piercing second element distal end, the second longitudinal element being sized to be slidably received in the first lumen and defining a second lumen extending therewithin to a tissue receiving opening at the second element distal end, the second longitudinal element being sufficiently flexible to be inserted to a target site along a tortuous path within a natural body lumen.
- FIG. 1 shows a side view of a system according to an exemplary embodiment of the present invention.
- FIG. 2 shows a side view a coupling of first and second needle devices of the system of FIG. 1 ;
- FIG. 3 shows a cross-sectional side view of a portion of nested first and second longitudinal elements
- FIG. 4 shows a side view of a distal end of the system of FIG. 1 ;
- FIG. 5 shows an enlarged side view of the distal end of FIG. 4 .
- the present invention relates to endoscopic devices and, in particular, relates to endoscopic biopsy devices.
- An exemplary embodiment of the present invention is directed to an endoscopic biopsy device including a first needle inserted into the body to a target area and a second needle insertable through a lumen of the first needle to access the target area and collect a tissue sample therefrom. It will be understood by those of skill in the art that the nesting of the second needle within the first needle permits the target area to be sampled multiple times while minimizing trauma to the target area and to the tissue surrounding the path along which the device is inserted to the target site. It should be noted that the terms distal and proximal, as used herein, are intended to indicate a direction away from (distal) and toward (proximal) a user of the device.
- a system 100 comprises a first needle 102 and a second needle 104 connectable to one another.
- the first needle 102 includes a first longitudinal element 106 defining a lumen 114 extending therethrough from an open proximal end 110 to an open distal end 112 .
- the first lumen 114 is sized and shaped to accommodate a second longitudinal element 108 of the second needle 104 .
- the first longitudinal element 106 may be flexible along a length thereof such that the first longitudinal element 106 may be inserted into the body along a tortuous path (e.g., within a body lumen) to reach a target area within the body.
- a proximal end 110 of the first longitudinal element 106 is coupled to a first handle 116 which extends from a proximal end 118 to a distal end 120 and includes a channel (not shown) extending therethrough sized to slidably receive the first longitudinal element 106 therethrough.
- the length of the first longitudinal element 106 is selected so that, when inserted through the channel of the first handle 116 with the proximal end 110 of the first longitudinal element 106 coupled thereto in a desired configuration, a distal end 112 extends distally out of the first handle 116 by a desired distance (e.g., a distance equal to a length of an endoscope to be coupled to the first handle 116 plus a desired projection of the needle distally beyond a distal end of the endoscope.
- a desired distance e.g., a distance equal to a length of an endoscope to be coupled to the first handle 116 plus a desired projection of the needle distally beyond a distal end of the endoscope.
- the channel is arranged so that, when the first handle 116 is coupled to an endoscope in a desired configuration, the channel of the first handle 116 aligns with a working channel of the endoscope so that the first needle 102 is slid therethrough to an insertion/withdrawal position with the distal end 112 received within the distal end of the endoscope.
- the first needle 102 may be moved distally to a deployed position in which the distal end 112 extends distally out of the distal end of the endoscope (e.g., to penetrate target tissue).
- the first handle 116 may further include a luer fitting 122 for coupling to the second needle 104 .
- the second longitudinal element 108 extends longitudinally from a proximal end 124 to a distal end 126 and includes a lumen 128 extending through at least a portion of a length thereof.
- an outer diameter of the second longitudinal element 108 is smaller than an inner diameter of the first lumen 114 of the first longitudinal element 106 such that the second longitudinal element 108 may be slidably inserted through the first lumen 114 .
- the first longitudinal element 106 may be a 19 gauge needle while the second longitudinal element is a 22 gauge needle.
- the first longitudinal element 106 may be a 22 gauge needle while the second longitudinal element 108 may be a 25 gauge needle.
- a length of the second longitudinal element 108 is preferably longer than a length of the first longitudinal element 106 such that when the second longitudinal element 108 is inserted into the first lumen 114 , the distal end 126 of the second longitudinal element 108 may be extended distally past the distal end 112 of the first longitudinal element 106 , as shown in FIG. 4 when desired.
- the proximal end 124 of the second longitudinal element 108 may include a stop 140 that extends radially outward from the second longitudinal element 108 to define a distal-most point to which the second longitudinal element 108 may be inserted into the first longitudinal element 106 .
- a sample of target tissue may be collected within the distal end 126 of the lumen 128 .
- the second longitudinal element 108 may include any other tissue collecting mechanism such as, for example, a lateral groove or a distal facing opening in the distal end 126 .
- a second handle 130 which may be attached to the proximal end 124 of the second longitudinal element 108 extends from a proximal end 132 to a distal end 134 and includes a channel 136 within which the extending therethrough.
- the channel 136 is sized and shaped to slidably receive the second longitudinal element 108 therethrough such that the second longitudinal element 108 may be inserted through the proximal end 132 of the handle until the distal end 126 of the second longitudinal element extends distally past the distal end 134 of the second handle 130 .
- the stop 140 at the proximal end 124 of the second longitudinal element 108 prevents the proximal end 124 of the second longitudinal element 108 from sliding distally past the proximal end 132 of the second handle 130 .
- the distal end 134 of the second handle 130 of this embodiment includes a coupling element 138 adapted and configured to mate with the luer fitting 122 of the first needle 102 such that the first and second needles 102 , 104 may be connected to one another.
- the second longitudinal element 108 of the second needle 104 may be inserted through the lumen 114 of the first longitudinal element 106 of the first needle 102 such that the second longitudinal element 108 is “nested” within the first longitudinal element 106 .
- the second longitudinal element 108 may be slid through the lumen 114 until the coupling element 138 of the second needle 104 comes into contact with the luer fitting 122 of the first needle 102 .
- the coupling element 138 and the luer fitting 122 mate with one another such that the first and second needles 102 , 104 are coupled to one another.
- the luer fitting 122 and the coupling element 138 may be press-fit to one another.
- the first and second needles 102 , 104 may be coupled to one another using any known coupling mechanism. Once the first and second needles 102 , 104 have been coupled to one another, the second longitudinal element 108 may be repeatedly used to collect tissue samples from the target area.
- suction may be applied to the system 100 in an annular space 129 within the first longitudinal element 106 and outside the second longitudinal element 118 using for example, a Y-connector.
- the system 100 may optionally include a filtering mechanism formed, for example, as a plurality of filter holes 142 at the distal end 126 of the second longitudinal element 108 sized to permit non-targeted materials such as blood and other fluids received in the lumen 128 to be suctioned through the wall of the second longitudinal element 108 into the space 129 between the first and second longitudinal elements 106 , 108 while preventing target tissue received in the lumen 128 from passing therethrough.
- a filtering mechanism formed, for example, as a plurality of filter holes 142 at the distal end 126 of the second longitudinal element 108 sized to permit non-targeted materials such as blood and other fluids received in the lumen 128 to be suctioned through the wall of the second longitudinal element 108 into the space 129 between the first and second longitudinal elements 106 ,
- each of the filter holes 142 may have a diameter of approximately 8-10 ⁇ m allowing red blood cells to flow therethrough while preventing harvested target tissue from passing out.
- each of the filter holes 142 may have a diameter in the range of 1 ⁇ m.-250 ⁇ m to conform to the requirements of a target procedure.
- the system 100 may further include a seal about the outer diameter of the second longitudinal element 108 at the distal end 126 that seals the space 129 to ensure that the suctioning force is transferred through the filter holes 142 to the lumen 128 .
- An exemplary method of use of the system 100 comprises coupling the distal end of the first handle 116 to an endoscope so that the channel extending therethrough aligns with a working channel of the endoscope.
- the first longitudinal element 106 of the first needle 102 is then slid through the channel of the first handle 116 into the working channel of the endoscope and advanced therethrough until the distal end 112 is in a desired position relative to the distal end of the endoscope (e.g., in the insertion/withdrawal configuration with the distal end 112 received within the distal end of the endoscope).
- the second needle 104 is then inserted through the second handle 130 into the first needle 102 and passed therethrough until the distal end of the second needle 104 is in a desired position within the first needle 102 (e.g., with the distal end 126 received within the first needle 102 in the insertion/withdrawal configuration).
- the second handle 130 is then coupled to the first needle 102 .
- the endoscope may then be inserted to a location adjacent to target tissue to be sampled in a known manner.
- the user advances the first needle 102 distally out of the endoscope (e.g., via distal advancement of the first handle 116 ) to a guide configuration in which the distal end 112 penetrates the target tissue.
- the first needle 102 is maintained in this position to provide a very accurate guide for the second needle 104 nested therein.
- the second needle 104 is moved to a tissue capture configuration in which it is advanced distally through the first needle 102 into the target tissue to obtain a first tissue sample.
- the second needle 104 is advanced by moving the second handle 130 distally until the second handle 130 comes into contact with the first handle 116 of the first needle 102 and the coupling element 138 of the second needle 104 is coupled to the luer fitting 122 of the first needle 102 .
- the user may then apply suction to the space 129 to draw fluids out of the sampled tissue and the second needle 104 is withdrawn from the first needle 102 so that the tissue sample may be analyzed.
- the coupling element 138 may be released from the luer fitting 122 and the second needle 104 may be drawn proximally to remove the second needle 104 from the first needle 102 .
- the second needle 104 is reinserted into the first needle 106 and advanced therethrough back into the target tissue mass to obtain a second sample. Suction may then be applied to the space 129 to draw blood and other fluids out of the lumen 128 via the filter holes 142 .
- the second needle 104 may then be withdrawn from the first needle 102 so that the second tissue sample may be removed for analysis. This procedure may be repeated as often as necessary with each sample being drawn from the same single puncture site defined by the distal end 112 of the first needle 102 , thereby minimizing patient trauma.
- the second needle 104 may be removed from the first needle 102 by decoupling the luer fitting 122 and the coupling element 138 of the first and second needles 102 , 104 , respectively.
- tissue collection has been completed, the first needle 102 is withdrawn proximally back into the working channel of the endoscope into the insertion/withdrawal configuration and the endoscope and first needle 102 are removed from the body in a conventional manner.
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Abstract
A biopsy device for insertion to a target site within a living body comprises a first longitudinal element including a first longitudinal element extending from a first element proximal end to a tissue piercing first element distal end and, the first longitudinal element defining a first lumen extending therethrough from a proximal opening at the first element proximal end to a distal opening at the first element distal end. The first longitudinal element is sufficiently flexible to be inserted to a target site along a tortuous path within a natural body lumen and a second longitudinal element extending from a proximal end to a tissue piercing second element distal end. The second longitudinal element is sized to be slidably received in the first lumen and defining a second lumen extending therewithin to a tissue receiving opening at the second element distal end. The second longitudinal element is sufficiently flexible to be inserted to a target site along a tortuous path within a natural body lumen.
Description
- This application claims the priority to the U.S. Provisional Application Ser. No. 61/301,833, entitled “NESTING ENDOSCOPIC ULTRASOUND GUIDED BIOPSY DEVICE” filed Feb. 5, 2010. The specification of the above-identified application is incorporated herewith by reference.
- Needle biopsies are common for the diagnosis and the staging of disease. In particular, in endoscopic ultrasound-guided fine needle aspiration (EUS-FNA), a biopsy needle is imaged under ultrasound so that the physician is able to visualize a position of the needle in relation to target tissue. Thus, EUS-FNA procedures ensure that the correct tissue is sampled while minimizing risk to the patient. Although EUS-FNA is a highly sensitive and specific procedure, in certain situations it may be difficult to acquire a satisfactory sample. For example, in some situations the needle must be advanced to the target site within the body along a tortuous path (e.g., through a natural body lumen) making it difficult to employ stiffer, large diameter needles. In addition, such larger gauge needles may collect tissue samples including a large amount of blood or other fluids which may interfere with analysis of the sampled tissue.
- The present invention is directed to a biopsy device for insertion to a target site within a living body, comprising a first longitudinal element including a first longitudinal element extending from a first element proximal end to a tissue piercing first element distal end and, the first longitudinal element defining a first lumen extending therethrough from a proximal opening at the first element proximal end to a distal opening at the first element distal end, the first longitudinal element being sufficiently flexible to be inserted to a target site along a tortuous path within a natural body lumen and a second longitudinal element extending from a proximal end to a tissue piercing second element distal end, the second longitudinal element being sized to be slidably received in the first lumen and defining a second lumen extending therewithin to a tissue receiving opening at the second element distal end, the second longitudinal element being sufficiently flexible to be inserted to a target site along a tortuous path within a natural body lumen.
-
FIG. 1 shows a side view of a system according to an exemplary embodiment of the present invention; and -
FIG. 2 shows a side view a coupling of first and second needle devices of the system ofFIG. 1 ; -
FIG. 3 shows a cross-sectional side view of a portion of nested first and second longitudinal elements; -
FIG. 4 shows a side view of a distal end of the system ofFIG. 1 ; and -
FIG. 5 shows an enlarged side view of the distal end ofFIG. 4 . - The present invention may be further understood with reference to the following description and the appended drawings, wherein like elements are referred to with the same reference numerals. The present invention relates to endoscopic devices and, in particular, relates to endoscopic biopsy devices. An exemplary embodiment of the present invention is directed to an endoscopic biopsy device including a first needle inserted into the body to a target area and a second needle insertable through a lumen of the first needle to access the target area and collect a tissue sample therefrom. It will be understood by those of skill in the art that the nesting of the second needle within the first needle permits the target area to be sampled multiple times while minimizing trauma to the target area and to the tissue surrounding the path along which the device is inserted to the target site. It should be noted that the terms distal and proximal, as used herein, are intended to indicate a direction away from (distal) and toward (proximal) a user of the device.
- As shown in
FIGS. 1-5 , asystem 100 according to an exemplary embodiment of the present invention comprises afirst needle 102 and asecond needle 104 connectable to one another. Thefirst needle 102 includes a firstlongitudinal element 106 defining alumen 114 extending therethrough from an openproximal end 110 to an opendistal end 112. Thefirst lumen 114 is sized and shaped to accommodate a secondlongitudinal element 108 of thesecond needle 104. The firstlongitudinal element 106 may be flexible along a length thereof such that the firstlongitudinal element 106 may be inserted into the body along a tortuous path (e.g., within a body lumen) to reach a target area within the body. - A
proximal end 110 of the firstlongitudinal element 106 is coupled to afirst handle 116 which extends from aproximal end 118 to adistal end 120 and includes a channel (not shown) extending therethrough sized to slidably receive the firstlongitudinal element 106 therethrough. The length of the firstlongitudinal element 106 is selected so that, when inserted through the channel of thefirst handle 116 with theproximal end 110 of the firstlongitudinal element 106 coupled thereto in a desired configuration, adistal end 112 extends distally out of thefirst handle 116 by a desired distance (e.g., a distance equal to a length of an endoscope to be coupled to thefirst handle 116 plus a desired projection of the needle distally beyond a distal end of the endoscope. The channel is arranged so that, when thefirst handle 116 is coupled to an endoscope in a desired configuration, the channel of thefirst handle 116 aligns with a working channel of the endoscope so that thefirst needle 102 is slid therethrough to an insertion/withdrawal position with thedistal end 112 received within the distal end of the endoscope. As discussed below, after the endoscope has been advanced to a target location, thefirst needle 102 may be moved distally to a deployed position in which thedistal end 112 extends distally out of the distal end of the endoscope (e.g., to penetrate target tissue). - As shown in
FIG. 2 , thefirst handle 116 may further include a luer fitting 122 for coupling to thesecond needle 104. The secondlongitudinal element 108 extends longitudinally from aproximal end 124 to adistal end 126 and includes alumen 128 extending through at least a portion of a length thereof. As shown inFIG. 3 , an outer diameter of the secondlongitudinal element 108 is smaller than an inner diameter of thefirst lumen 114 of the firstlongitudinal element 106 such that the secondlongitudinal element 108 may be slidably inserted through thefirst lumen 114. For example, in a preferred embodiment, the firstlongitudinal element 106 may be a 19 gauge needle while the second longitudinal element is a 22 gauge needle. Alternatively, the firstlongitudinal element 106 may be a 22 gauge needle while the secondlongitudinal element 108 may be a 25 gauge needle. - A length of the second
longitudinal element 108 is preferably longer than a length of the firstlongitudinal element 106 such that when the secondlongitudinal element 108 is inserted into thefirst lumen 114, thedistal end 126 of the secondlongitudinal element 108 may be extended distally past thedistal end 112 of the firstlongitudinal element 106, as shown inFIG. 4 when desired. Theproximal end 124 of the secondlongitudinal element 108 may include astop 140 that extends radially outward from the secondlongitudinal element 108 to define a distal-most point to which the secondlongitudinal element 108 may be inserted into the firstlongitudinal element 106. A sample of target tissue may be collected within thedistal end 126 of thelumen 128. However, it will be understood by those of skill in the art that the secondlongitudinal element 108 may include any other tissue collecting mechanism such as, for example, a lateral groove or a distal facing opening in thedistal end 126. - A
second handle 130 which may be attached to theproximal end 124 of the secondlongitudinal element 108 extends from aproximal end 132 to adistal end 134 and includes achannel 136 within which the extending therethrough. Thechannel 136 is sized and shaped to slidably receive the secondlongitudinal element 108 therethrough such that the secondlongitudinal element 108 may be inserted through theproximal end 132 of the handle until thedistal end 126 of the second longitudinal element extends distally past thedistal end 134 of thesecond handle 130. Thestop 140 at theproximal end 124 of the secondlongitudinal element 108 prevents theproximal end 124 of the secondlongitudinal element 108 from sliding distally past theproximal end 132 of thesecond handle 130. Thedistal end 134 of thesecond handle 130 of this embodiment includes acoupling element 138 adapted and configured to mate with the luer fitting 122 of thefirst needle 102 such that the first andsecond needles - The second
longitudinal element 108 of thesecond needle 104 may be inserted through thelumen 114 of the firstlongitudinal element 106 of thefirst needle 102 such that the secondlongitudinal element 108 is “nested” within the firstlongitudinal element 106. The secondlongitudinal element 108 may be slid through thelumen 114 until thecoupling element 138 of thesecond needle 104 comes into contact with the luer fitting 122 of thefirst needle 102. Thecoupling element 138 and the luer fitting 122 mate with one another such that the first andsecond needles coupling element 138 may be press-fit to one another. It will be understood by those of skill in the art, however, that although the exemplary embodiments describe the luer fitting 122 and thecoupling element 138, the first andsecond needles second needles longitudinal element 108 may be repeatedly used to collect tissue samples from the target area. - As would be understood by those skilled in the art, suction may be applied to the
system 100 in anannular space 129 within the firstlongitudinal element 106 and outside the secondlongitudinal element 118 using for example, a Y-connector. In addition, as shown inFIG. 5 , thesystem 100 may optionally include a filtering mechanism formed, for example, as a plurality offilter holes 142 at thedistal end 126 of the secondlongitudinal element 108 sized to permit non-targeted materials such as blood and other fluids received in thelumen 128 to be suctioned through the wall of the secondlongitudinal element 108 into thespace 129 between the first and secondlongitudinal elements lumen 128 from passing therethrough. For example, where the non-targeted material is blood, each of thefilter holes 142 may have a diameter of approximately 8-10 μm allowing red blood cells to flow therethrough while preventing harvested target tissue from passing out. In an alternate embodiment, each of thefilter holes 142 may have a diameter in the range of 1 μm.-250 μm to conform to the requirements of a target procedure. Thesystem 100 may further include a seal about the outer diameter of the secondlongitudinal element 108 at thedistal end 126 that seals thespace 129 to ensure that the suctioning force is transferred through thefilter holes 142 to thelumen 128. - An exemplary method of use of the
system 100 comprises coupling the distal end of thefirst handle 116 to an endoscope so that the channel extending therethrough aligns with a working channel of the endoscope. The firstlongitudinal element 106 of thefirst needle 102 is then slid through the channel of thefirst handle 116 into the working channel of the endoscope and advanced therethrough until thedistal end 112 is in a desired position relative to the distal end of the endoscope (e.g., in the insertion/withdrawal configuration with thedistal end 112 received within the distal end of the endoscope). Thesecond needle 104 is then inserted through thesecond handle 130 into thefirst needle 102 and passed therethrough until the distal end of thesecond needle 104 is in a desired position within the first needle 102 (e.g., with thedistal end 126 received within thefirst needle 102 in the insertion/withdrawal configuration). Thesecond handle 130 is then coupled to thefirst needle 102. The endoscope may then be inserted to a location adjacent to target tissue to be sampled in a known manner. The user then advances thefirst needle 102 distally out of the endoscope (e.g., via distal advancement of the first handle 116) to a guide configuration in which thedistal end 112 penetrates the target tissue. Thefirst needle 102 is maintained in this position to provide a very accurate guide for thesecond needle 104 nested therein. Thesecond needle 104 is moved to a tissue capture configuration in which it is advanced distally through thefirst needle 102 into the target tissue to obtain a first tissue sample. As would be understood by those skilled in the art, in the tissue capture configuration, thesecond needle 104 is advanced by moving thesecond handle 130 distally until thesecond handle 130 comes into contact with thefirst handle 116 of thefirst needle 102 and thecoupling element 138 of thesecond needle 104 is coupled to the luer fitting 122 of thefirst needle 102. The user may then apply suction to thespace 129 to draw fluids out of the sampled tissue and thesecond needle 104 is withdrawn from thefirst needle 102 so that the tissue sample may be analyzed. Specifically, after the tissue sample has been collected, thecoupling element 138 may be released from the luer fitting 122 and thesecond needle 104 may be drawn proximally to remove thesecond needle 104 from thefirst needle 102. If it is desired to take another tissue sample, thesecond needle 104 is reinserted into thefirst needle 106 and advanced therethrough back into the target tissue mass to obtain a second sample. Suction may then be applied to thespace 129 to draw blood and other fluids out of thelumen 128 via the filter holes 142. Thesecond needle 104 may then be withdrawn from thefirst needle 102 so that the second tissue sample may be removed for analysis. This procedure may be repeated as often as necessary with each sample being drawn from the same single puncture site defined by thedistal end 112 of thefirst needle 102, thereby minimizing patient trauma. - The
second needle 104 may be removed from thefirst needle 102 by decoupling the luer fitting 122 and thecoupling element 138 of the first andsecond needles first needle 102 is withdrawn proximally back into the working channel of the endoscope into the insertion/withdrawal configuration and the endoscope andfirst needle 102 are removed from the body in a conventional manner. - It will be apparent to those of skill in the art that various modifications and variations can be made in the structure and the methodology of the present invention, without departing from the spirit or the scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided that they come within the scope of the appended claims and their equivalents.
Claims (15)
1. A biopsy device for insertion to a target site within a living body, comprising:
a first longitudinal element including a first longitudinal element extending from a first element proximal end to a tissue piercing first element distal end and, the first longitudinal element defining a first lumen extending therethrough from a proximal opening at the first element proximal end to a distal opening at the first element distal end, the first longitudinal element being sufficiently flexible to be inserted to a target site along a tortuous path within a natural body lumen; and
a second longitudinal element extending from a proximal end to a tissue piercing second element distal end, the second longitudinal element being sized to be slidably received in the first lumen and defining a second lumen extending therewithin to a tissue receiving opening at the second element distal end, the second longitudinal element being sufficiently flexible to be inserted to a target site along a tortuous path within a natural body lumen.
2. The device of claim 1 , wherein an outer diameter of the second longitudinal element is smaller than an inner diameter of the first lumen by an amount selected to create a fluid receiving annular space therebetween when the second longitudinal element is inserted into the first lumen.
3. The device of claim 2 , wherein the second longitudinal element includes a filter at a distal end thereof, the filter permitting fluids to pass therethrough from the second lumen into the fluid receiving annular space while preventing tissue received in the second lumen from passing therethrough.
4. The device of claim 3 , wherein the filter comprises a plurality of holes in a distal portion of a wall of the second longitudinal element.
5. The device of claim 4 , wherein the holes of the filter are between 1 μm. and 250 μm in diameter.
6. The device of claim 4 , wherein the holes of the filter are between 8 μm and 10 μm in diameter.
7. The device of claim 1 , further comprising:
a coupling mechanism selectively coupling the first and second longitudinal elements to one another.
8. The device of claim 7 , wherein the coupling mechanism includes a first luer fitting at a proximal end of a first handle coupleable to the first longitudinal element and a complimentary luer fitting at a distal end of a second handle coupleable to the second longitudinal element.
9. The device of claim 8 , wherein the first handle including a channel extending therethrough sized to slidably receive the second longitudinal element therein so that, when the first handle is coupled to the first longitudinal element, insertion of the second longitudinal element into the channel of the first handle directs the second longitudinal element into the first lumen.
10. The device of claim 9 , wherein the handle of the second needle including a channel extending therethrough such that the channel slidably receives the second longitudinal element therethrough.
11. The device of claim 1 , wherein the second longitudinal element is longer than the first longitudinal element such that, when inserted into the first lumen to a tissue penetrating configuration, the distal end of the second longitudinal element extends distally past the distal end of the first longitudinal element.
12. A method, comprising:
inserting a first longitudinal element along a tortuous path into a living body until a distal end thereof penetrates tissue at a target area;
inserting a second longitudinal element of through a first lumen of the first longitudinal element to penetrate tissue at the target area and receive a tissue sample in a distal end thereof;
withdrawing the second longitudinal element from the first lumen; and
after withdrawing the second longitudinal element from the first lumen, while maintaining the distal end of the first longitudinal element in the tissue at the target area, inserting one of the second longitudinal element and a third longitudinal element into the first lumen to receive a second tissue sample therein.
13. The method of claim 12 , further comprising:
coupling the first and second longitudinal elements to one another via a first luer fitting at a proximal end of a first handle coupled to the first longitudinal element and a second coupling element at a distal end of a second handle of the second longitudinal element.
14. The method of claim 13 , wherein the first handle includes a first channel extending therethrough sized to slidably receive the second longitudinal element, the first channel being positioned so that, when the first handle is coupled to the first longitudinal element in a desired configuration, insertion of the second longitudinal element into the first channel directs the second longitudinal element into the first lumen.
15. The method of claim 14 , wherein the second handle includes a second channel extending therethrough sized to slidably receives the second longitudinal element therein.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US13/015,794 US20110196258A1 (en) | 2010-02-05 | 2011-01-28 | Nesting endoscopic ultrasound guided biopsy device |
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US30183310P | 2010-02-05 | 2010-02-05 | |
US13/015,794 US20110196258A1 (en) | 2010-02-05 | 2011-01-28 | Nesting endoscopic ultrasound guided biopsy device |
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US20110196258A1 true US20110196258A1 (en) | 2011-08-11 |
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US13/015,794 Abandoned US20110196258A1 (en) | 2010-02-05 | 2011-01-28 | Nesting endoscopic ultrasound guided biopsy device |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014200845A1 (en) | 2013-06-12 | 2014-12-18 | Boston Scientific Scimed, Inc. | Fiducial deployment mechanisms |
CN110461246A (en) * | 2017-03-16 | 2019-11-15 | 波士顿科学国际有限公司 | For the biopsy needle close to periphery Lung neoplasm |
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US20100114031A1 (en) * | 2008-11-05 | 2010-05-06 | Jarial Inderjeet S | Introducer localization assemblies |
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- 2011-01-28 WO PCT/US2011/022853 patent/WO2011097125A1/en active Application Filing
- 2011-01-28 EP EP11702125.3A patent/EP2531112B1/en not_active Not-in-force
- 2011-01-28 US US13/015,794 patent/US20110196258A1/en not_active Abandoned
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US5222502A (en) * | 1990-09-26 | 1993-06-29 | Terumo Kabushiki Kaisha | Blood collecting needle |
US5183054A (en) * | 1991-09-09 | 1993-02-02 | Sherwood Medical Company | Actuated biopsy cutting needle with removable stylet |
US5273051A (en) * | 1993-03-16 | 1993-12-28 | Wilk Peter J | Method and associated device for obtaining a biopsy of tissues of an internal organ |
US20010004676A1 (en) * | 1999-12-14 | 2001-06-21 | Asahi Kogaku Kogyo Kabushiki Kaisha | Manipulating section for an endoscopic treatment instrument |
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US20070106176A1 (en) * | 2003-10-14 | 2007-05-10 | Mark Joseph L | Vacuum assisted biopsy needle set |
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US20060189891A1 (en) * | 2004-12-15 | 2006-08-24 | Irving Waxman | Flexible elongate surgical needle device having a tissue engaging section being of greater flexibility than an intermediate section, and methods of using the device |
US20090299217A1 (en) * | 2006-01-12 | 2009-12-03 | Multi Biopsy Sampling Co. Aps | Sampling Apparatus for Taking a Number of Samples |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014200845A1 (en) | 2013-06-12 | 2014-12-18 | Boston Scientific Scimed, Inc. | Fiducial deployment mechanisms |
EP3590439A1 (en) | 2013-06-12 | 2020-01-08 | Boston Scientific Scimed, Inc. | Fiducial deployment mechanisms |
CN110461246A (en) * | 2017-03-16 | 2019-11-15 | 波士顿科学国际有限公司 | For the biopsy needle close to periphery Lung neoplasm |
Also Published As
Publication number | Publication date |
---|---|
WO2011097125A1 (en) | 2011-08-11 |
EP2531112B1 (en) | 2017-11-22 |
EP2531112A1 (en) | 2012-12-12 |
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Legal Events
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AS | Assignment |
Owner name: BOSTON SCIENTIFIC SCIMED, INC., MINNESOTA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:RYAN, SHAWN;BURNIM, KAYLA;REEL/FRAME:025729/0340 Effective date: 20110107 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |